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Round|Natural|GIA

6.25ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2115100400

Certificate GIA 2115100400

Diamond specifications and retailer prices

From £127,537 GBP
$170,885 USD
As of October 30, 2026
Save £47,691 GBP (27%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £175,228 GBP at Yorxs · As of October 30, 2026
View at Yorxs

About this 6.25ct natural round diamond

This 6.25ct natural round sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2115100400. Listed at 7 retailers as of October 30, 2026, with prices from £127,537 to £175,228, a £47,691 spread on the same certified stone. Yorxs lists it at £175,228. 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

6.25
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2115100400
Dimensions11.86 × 11.92 × 7.23 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Top View
11.86 mm11.92 mm6.25 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2115100400
Side View
Table 57.0%Crown 34°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 60.8%

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: Oct 30
Current: £155,193 GBP|Low: £126,337 GBP|High: £175,228 GBP|Avg: £144,089 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Yorxs
October 31, 2026
Retailer 4£127,537 GBP
Retailer 5£128,890 GBP
Retailer 2£140,805 GBP
Retailer 3£145,619 GBP
Retailer 1£155,193 GBP
Yorxs£175,228 GBP

27 data points across 6 retailers

7 retailers£127,537 GBP to £175,228 GBP

B+
Cheapest Retailer
-
£127,537 GBP
$170,885 USD
B+
Retailer 2
-
£128,890 GBP
$172,699 USD
View
B+
Retailer 3
-
£140,805 GBP
$188,663 USD
View
Retailer 4
-
£140,805 GBP
$188,663 USD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
£145,619 GBP
$195,113 USD
View
Final sale: no returns
B+
Retailer 6
-
£155,193 GBP
View
Most Expensive
B
Yorxs
M8902 · Oct 30
£175,228 GBP
€223,606 EUR
View
6 more retailers have this diamond
Prices start from £127,537 GBPSave up to £47,691 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+
6.25ct Round
£127,537 GBP