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Round|Natural|GIA

1.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2506126317

Certificate GIA 2506126317

Diamond specifications and retailer prices

From €4,342 EUR
HK$37,900 HKD
As of October 31, 2026
Save €4,263 EUR (50%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €8,605 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.4ct natural round diamond

This 1.4ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506126317. Listed at 6 retailers as of October 31, 2026, with prices from €4,342 to €8,605, a €4,263 spread on the same certified stone. MOH London lists it at €8,605. 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

1.40
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2506126317
Dimensions7.11 × 7.06 × 4.45 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.11 mm7.06 mm1.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506126317
Side View
Table 56.0%Crown 36.5°Girdle: STK-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €8,605 EUR|Low: €4,296 EUR|High: €8,709 EUR|Avg: €5,928 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4€4,342 EUR
Retailer 5€5,071 EUR
Retailer 6€5,087 EUR
Retailer 3€5,566 EUR
Retailer 2€6,355 EUR
MOH London€8,605 EUR

42 data points across 6 retailers

6 retailers€4,342 EUR to €8,605 EUR

A
Cheapest Retailer
-
€4,342 EUR
HK$37,900 HKD
Retailer 2
-
€5,071 EUR
$5,665 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
€5,087 EUR
$5,683 USD
View
B+
Retailer 4
-
€5,566 EUR
£4,896 GBP
View
B+
Retailer 5
-
€6,355 EUR
View
Most Expensive
B
MOH London
484BB4A7D · Nov 1
€8,605 EUR
£7,570 GBP
View
5 more retailers have this diamond
Prices start from €4,342 EURSave up to €4,263 EUR

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
1.40ct Round
€4,342 EUR