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Round|Lab Grown|IGI

3.00ct D SI2 Round Lab Grown Diamond

VG • D/SI2 • IGI LG425057688

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425057688

Diamond specifications and retailer prices

From £307 GBP
As of November 5, 2026
Save £1,640 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,947 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3ct lab-grown round diamond

This 3ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425057688 or 425057688. Listed at 17 retailers as of November 5, 2026, with prices from £307 to £1,947, a £1,640 spread on the same certified stone. Brilliant Earth lists it at £1,947. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.00
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle36°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425057688
Dimensions9.09 × 9.01 × 5.80 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
9.09 mm9.01 mm3.00 ctD / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI LG425057688
Side View
Table 52.0%Crown 36°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
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: Nov 5
Current: £1,947 GBP|Low: £307 GBP|High: £6,799 GBP|Avg: £1,294 GBP|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 5, 2026
Retailer 12£307 GBP
Retailer 11£344 GBP
Retailer 14£381 GBP
Retailer 2£581 GBP
Retailer 5£594 GBP
Retailer 10£648 GBP
Retailer 8£687 GBP
Retailer 3£1,068 GBP
Retailer 9£1,211 GBP
Retailer 13£1,351 GBP
Retailer 7£1,540 GBP
Retailer 6£1,555 GBP
Brilliant Earth£1,947 GBP
Retailer 4£6,799 GBP

45 data points across 14 retailers

17 retailers£307 GBP to £1,947 GBP

A
Cheapest Retailer
-
£307 GBP
B+
Retailer 2
-
£344 GBP
View
B+
Retailer 3
-
£379 GBP
View
Final sale: no returns
B+
Retailer 4
-
£381 GBP
View
B+
Retailer 5
-
£542 GBP
View
B+
Retailer 6
-
£581 GBP
View
B
Retailer 7
-
£594 GBP
View
B+
Retailer 8
-
£605 GBP
View
B+
Retailer 9
-
£614 GBP
View
B+
Retailer 10
-
£648 GBP
View
B+
Retailer 11
-
£687 GBP
View
B
Retailer 12
-
£1,068 GBP
View
B
Retailer 13
-
£1,211 GBP
View
B
Retailer 14
-
£1,351 GBP
View
B
Retailer 15
-
£1,540 GBP
View
B
Retailer 16
-
£1,555 GBP
View
Most Expensive
B
Brilliant Earth
7652076Y · Nov 5
£1,947 GBP
$2,620 USD
View
16 more retailers have this diamond
Prices start from £307 GBPSave up to £1,640 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
3.00ct Round
£307 GBP