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Round|Lab Grown|IGI

1.00ct J SI1 Round Lab Grown Diamond

GD • J/SI1 • IGI LGS2G57536

Certificate IGI LGS2G57536

Diamond specifications and retailer prices

From £776 GBP
₹98,972 INR
As of October 31, 2026
Save £564 GBP (42%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,340 GBP at Yorxs · As of October 31, 2026
View at Yorxs

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LGS2G57536 or S2G57536. Listed at 2 retailers as of October 31, 2026, with prices from £776 to £1,340, a £564 spread on the same certified stone. Yorxs lists it at £1,340. 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

1.00
Carat
J
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGS2G57536
Dimensions6.14 × 6.20 × 4.10 mm
L/W Ratio1.01
Top View
6.14 mm6.20 mm1.00 ctJ / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LGS2G57536
Side View
Table 55.0%CrownGirdlePavilionCuletDepth 67.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £776 GBP|Low: £774 GBP|High: £1,340 GBP|Avg: £1,029 GBP|-2.5%
Retailer 1
Retailer 2
Yorxs
October 31, 2026
Retailer 1£776 GBP
Retailer 2£1,051 GBP
Yorxs£1,340 GBP

45 data points across 3 retailers

2 retailers£776 GBP to £1,340 GBP

B+
Cheapest Retailer
-
£776 GBP
₹98,972 INR
Most Expensive
C
Yorxs
ST-492 · Oct 31
£1,340 GBP
€1,710 EUR
View
1 more retailer has this diamond
Prices start from £776 GBPSave up to £564 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.

B+
1.00ct Round
£776 GBP