Round|Lab Grown|IGI

1.27ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG818645228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818645228

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 29, 2026
Save £742 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,526 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.27ct lab-grown round diamond

This 1.27ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818645228 or 818645228. Listed at 24 retailers as of October 29, 2026, with a 495% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818645228
Dimensions7.00 × 7.09 × 4.17 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.00 mm7.09 mm1.27 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818645228
Side View
Table 61.0%Crown 33.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,526 GBP|Low: £144 GBP|High: £1,526 GBP|Avg: £468 GBP
Queensmith
Retailer 2
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Retailer 24
October 30, 2026
Retailer 3£150 GBP
Retailer 14£168 GBP
Retailer 15£174 GBP
Retailer 6£186 GBP
Retailer 7£186 GBP
Retailer 4£210 GBP
Retailer 9£250 GBP
Retailer 2£311 GBP
Retailer 18£311 GBP
Retailer 20£319 GBP
Retailer 5£322 GBP
Retailer 13£340 GBP
Retailer 8£370 GBP
Retailer 22£384 GBP
Retailer 21£454 GBP
Retailer 11£597 GBP
Retailer 23£599 GBP
Retailer 16£603 GBP
Retailer 17£630 GBP
Retailer 12£637 GBP
Retailer 24£799 GBP
Retailer 19£873 GBP
Retailer 10£892 GBP
Queensmith£1,526 GBP

25 data points across 24 retailers

24 retailers£150 GBP to £892 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£168 GBP
$225 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$233 USD
View
A
Retailer 4
-
£186 GBP
$249 USD
View
A
Retailer 5
-
£186 GBP
$249 USD
View
A
Retailer 6
-
£210 GBP
HK$2,200 HKD
View
B+
Retailer 7
-
£250 GBP
$335 USD
View
A
Retailer 8
-
£311 GBP
View
A
Retailer 9
-
£311 GBP
€397 EUR
View
A
Retailer 10
-
£319 GBP
ZAR 6,900 ZAR
View
B+
Retailer 11
-
£322 GBP
$431 USD
View
B+
Retailer 12
-
£340 GBP
View
B+
Retailer 13
-
£370 GBP
$496 USD
View
Retailer 14
-
£384 GBP
$515 USD
View
Price last confirmed 12 days ago
B+
Retailer 15
-
£454 GBP
A$935 AUD
View
B
Retailer 16
-
£597 GBP
$800 USD
View
B
Retailer 17
-
£599 GBP
$802 USD
View
B
Retailer 18
-
£603 GBP
SGD 1,092 SGD
View
B
Retailer 19
-
£630 GBP
$844 USD
View
B
Retailer 20
-
£637 GBP
$853 USD
View
B
Retailer 21
-
£799 GBP
$1,070 USD
View
B
Retailer 22
-
£873 GBP
View
B
Retailer 23
-
£892 GBP
$1,195 USD
View
Most Expensive
Queensmith
LG818645228 · Oct 27
£1,526 GBP
View
Price under review
23 more retailers have this diamond
Prices start from £150 GBPSave up to £742 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
1.27ct Round
£150 GBP