CaratHunter
Plans
Round|Lab Grown|IGI

12.07ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG816679583

Certificate IGI LG816679583

Diamond specifications and retailer prices

From £3,039 GBP
$4,072 USD
As of November 1, 2026
Save £2,862 GBP (49%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,901 GBP at Adiamor · As of November 2, 2026
View at Adiamor

About this 12.07ct lab-grown round diamond

This 12.07ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816679583 or 816679583. Listed at 4 retailers as of November 1, 2026, with prices from £3,039 to £5,901, a £2,862 spread on the same certified stone. Adiamor lists it at £5,901. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

12.07
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG816679583
Dimensions14.89 × 14.96 × 8.87 mm
L/W Ratio1.00
Top View
14.89 mm14.96 mm12.07 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816679583
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 59.4%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £5,901 GBP|Low: £2,100 GBP|High: £5,901 GBP|Avg: £2,949 GBP|+1.8%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5£2,100 GBP
Retailer 2£3,039 GBP
Retailer 3£3,117 GBP
Retailer 4£3,627 GBP
Adiamor£5,901 GBP

10 data points across 5 retailers

4 retailers£3,039 GBP to £5,901 GBP

B+
Cheapest Retailer
-
£3,039 GBP
$4,072 USD
B+
Retailer 2
-
£3,117 GBP
$4,176 USD
View
B
Retailer 3
-
£3,627 GBP
€4,628 EUR
View
Most Expensive
B
Adiamor
D-82724176 · Nov 2
£5,901 GBP
$7,907 USD
View
3 more retailers have this diamond
Prices start from £3,039 GBPSave up to £2,862 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+
12.07ct Round
£3,039 GBP