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Round|Lab Grown|GIA

3.09ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6451053117

Certificate GIA 6451053117

Diamond specifications and retailer prices

From £1,044 GBP
As of November 4, 2026
Save £1,819 GBP (64%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,863 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6451053117. Listed at 5 retailers as of November 1, 2026, with prices from £1,044 to £2,863, a £1,819 spread on the same certified stone. MOH London lists it at £2,863. 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

3.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 6451053117
Dimensions9.38 × 9.41 × 5.69 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.38 mm9.41 mm3.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451053117
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.6%

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: Nov 4
Current: £2,863 GBP|Low: £1,044 GBP|High: £5,052 GBP|Avg: £2,650 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3£1,044 GBP
Retailer 4£1,130 GBP
Retailer 2£1,235 GBP
Retailer 5£1,350 GBP
MOH London£2,863 GBP
Retailer 7£3,321 GBP
Retailer 6£5,052 GBP
Retailer 8£5,052 GBP

10 data points across 8 retailers

5 retailers£1,044 GBP to £2,863 GBP

B+
Cheapest Retailer
-
£1,044 GBP
B+
Retailer 2
-
£1,130 GBP
View
B+
Retailer 3
-
£1,235 GBP
View
B
Retailer 4
-
£1,350 GBP
View
Most Expensive
B
MOH London
6451053117 · Nov 1
£2,863 GBP
View
4 more retailers have this diamond
Prices start from £1,044 GBPSave up to £1,819 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+
3.09ct Round
£1,044 GBP