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1.23ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2517395526

Certificate GIA 2517395526

Diamond specifications and retailer prices

From €5,624 EUR
£4,947 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: €5,624 EUR at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2517395526. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.23
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2517395526
Dimensions6.81 × 6.83 × 4.25 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
6.81 mm6.83 mm1.23 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2517395526
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 40.6°CuletDepth 62.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €5,624 EUR|Low: €5,624 EUR|High: €5,624 EUR|Avg: €5,624 EUR
September 26, 2026
Diamond Quarter€5,624 EUR

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
1.23SI2D25265834N · Oct 31
€5,624 EUR
£4,947 GBP
View

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
1.23ct Round
€5,624 EUR