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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 $6,833 AUD
HK$37,500 HKD
As of October 30, 2026
Save $6,927 AUD (50%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $13,760 AUD at MOH London · As of October 29, 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 29, 2026, with prices from $6,833 to $13,760, a $6,927 spread on the same certified stone. MOH London lists it at $13,760. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $13,760 AUD|Low: $6,833 AUD|High: $13,851 AUD|Avg: $9,327 AUD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 6$6,833 AUD
Retailer 4$8,065 AUD
Retailer 5$8,090 AUD
Retailer 2$8,851 AUD
Retailer 3$10,151 AUD
MOH London$13,760 AUD

41 data points across 6 retailers

6 retailers$6,833 AUD to $13,760 AUD

A
Cheapest Retailer
-
$6,833 AUD
HK$37,500 HKD
B+
Retailer 2
-
$8,065 AUD
$5,665 USD
View
B+
Retailer 3
-
$8,090 AUD
$5,683 USD
View
B+
Retailer 4
-
$8,851 AUD
£4,896 GBP
View
B+
Retailer 5
-
$10,151 AUD
€6,791 EUR
View
Most Expensive
B
MOH London
484BB4A7D · Oct 29
$13,760 AUD
£7,611 GBP
View
5 more retailers have this diamond
Prices start from $6,833 AUDSave up to $6,927 AUD

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
$6,833 AUD