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3.09ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • GCAL 330160230

Shape and cutting style on the report: Round brilliant

Certificate GCAL 330160230

Diamond specifications and retailer prices

From £299 GBP
$401 USD
As of October 29, 2026
Save £2,358 GBP (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,657 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 330160230. Listed at 19 retailers as of October 29, 2026, with prices from £299 to £2,657, a £2,358 spread on the same certified stone. Do Amore Diamonds lists it at £2,657. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 330160230
Dimensions9.32 × 9.36 × 5.80 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.32 mm9.36 mm3.09 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 330160230
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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: £2,657 GBP|Low: £269 GBP|High: £2,657 GBP|Avg: £928 GBP|+6.9%
Do Amore Diamonds
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
Retailer 15
November 1, 2026
Retailer 12£299 GBP
Retailer 4£335 GBP
Retailer 3£372 GBP
Retailer 5£372 GBP
Retailer 6£551 GBP
Retailer 2£591 GBP
Retailer 13£593 GBP
Retailer 9£622 GBP
Retailer 8£1,105 GBP
Retailer 11£1,138 GBP
Retailer 15£1,318 GBP
Retailer 7£1,430 GBP
Retailer 10£1,509 GBP
Retailer 14£1,578 GBP
Do Amore Diamonds£2,657 GBP

42 data points across 15 retailers

19 retailers£299 GBP to £2,657 GBP

Retailer 1
-
£280 GBP
$375 USD
Price last confirmed 38 days ago
A
Retailer 2
-
£299 GBP
$401 USD
View
Retailer 3
-
£313 GBP
$420 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
£335 GBP
$449 USD
View
Final sale: no returns
Retailer 5
-
£343 GBP
$459 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
£372 GBP
$498 USD
View
A
Retailer 7
-
£372 GBP
$498 USD
View
B+
Retailer 8
-
£551 GBP
$738 USD
View
A
Retailer 9
-
£560 GBP
$751 USD
View
A
Retailer 10
-
£591 GBP
View
A
Retailer 11
-
£593 GBP
$794 USD
View
B
Retailer 12
-
£1,105 GBP
View
B+
Retailer 13
-
£1,138 GBP
CA$2,118 CAD
View
Retailer 14
-
£1,232 GBP
$1,651 USD
View
Price last confirmed 40 days ago
B
Retailer 15
-
£1,318 GBP
$1,766 USD
View
B
Retailer 16
-
£1,430 GBP
$1,916 USD
View
B
Retailer 17
-
£1,509 GBP
View
B
Retailer 18
-
£1,578 GBP
$2,115 USD
View
Most Expensive
B
Do Amore Diamonds
27-E1F17E686 · Oct 31
£2,657 GBP
$3,560 USD
View
18 more retailers have this diamond
Prices start from £299 GBPSave up to £2,358 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
3.09ct Round
£299 GBP