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Round|Lab Grown|IGI

12.45ct E VS1 Round Lab Grown Diamond

ID • E/VS1 • IGI LG690526732

Shape and cutting style on the report: Round brilliant

Certificate IGI LG690526732

Diamond specifications and retailer prices

From £2,994 GBP
$4,011 USD
As of October 29, 2026
Save £19,128 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £22,121 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.45ct lab-grown round diamond

This 12.45ct lab-grown round sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG690526732 or 690526732. Listed at 23 retailers as of October 29, 2026, with prices from £2,994 to £22,121, a £19,128 spread on the same certified stone. Brilliant Earth lists it at £22,121. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

12.45
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG690526732
Dimensions14.87 × 14.91 × 9.12 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.87 mm14.91 mm12.45 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG690526732
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £22,121 GBP|Low: £2,994 GBP|High: £22,121 GBP|Avg: £7,056 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 7£2,994 GBP
Retailer 21£3,137 GBP
Retailer 3£3,352 GBP
Retailer 6£3,473 GBP
Retailer 17£3,474 GBP
Retailer 4£3,548 GBP
Retailer 10£4,098 GBP
Retailer 5£4,172 GBP
Retailer 9£4,339 GBP
Retailer 13£4,541 GBP
Retailer 18£4,892 GBP
Retailer 16£5,374 GBP
Retailer 15£5,520 GBP
Retailer 19£6,544 GBP
Retailer 8£7,348 GBP
Retailer 20£7,828 GBP
Retailer 2£8,928 GBP
Retailer 11£9,644 GBP
Retailer 12£11,868 GBP
Retailer 14£12,322 GBP
Brilliant Earth£22,121 GBP

39 data points across 21 retailers

23 retailers£2,994 GBP to £22,121 GBP

A
Cheapest Retailer
-
£2,994 GBP
$4,011 USD
A
Retailer 2
-
£3,137 GBP
$4,203 USD
View
A
Retailer 3
-
£3,352 GBP
$4,491 USD
View
Final sale: no returns
A
Retailer 4
-
£3,473 GBP
$4,653 USD
View
A
Retailer 5
-
£3,474 GBP
$4,655 USD
View
A
Retailer 6
-
£3,548 GBP
$4,754 USD
View
Retailer 7
-
£3,960 GBP
$5,306 USD
View
Price last confirmed 19 days ago
A
Retailer 8
-
£4,098 GBP
HK$42,900 HKD
View
A
Retailer 9
-
£4,172 GBP
$5,590 USD
View
A
Retailer 10
-
£4,339 GBP
$5,814 USD
View
A
Retailer 11
-
£4,541 GBP
View
A
Retailer 12
-
£4,892 GBP
$6,555 USD
View
B+
Retailer 13
-
£5,374 GBP
ZAR 116,336 ZAR
View
B+
Retailer 14
-
£5,520 GBP
€7,044 EUR
View
B+
Retailer 15
-
£6,528 GBP
$8,747 USD
View
Retailer 16
-
£6,544 GBP
A$13,489 AUD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
£7,348 GBP
$9,845 USD
View
B+
Retailer 18
-
£7,828 GBP
$10,489 USD
View
Retailer 19
-
£8,928 GBP
A$18,403 AUD
View
B
Retailer 20
-
£9,644 GBP
$12,922 USD
View
B
Retailer 21
-
£11,868 GBP
SGD 21,489 SGD
View
B
Retailer 22
-
£12,322 GBP
$16,511 USD
View
Most Expensive
B
Brilliant Earth
20264486A · Oct 31
£22,121 GBP
$29,640 USD
View
22 more retailers have this diamond
Prices start from £2,994 GBPSave up to £19,128 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
12.45ct Round
£2,994 GBP