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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 1545041696

Certificate GIA 1545041696

Diamond specifications and retailer prices

From $19,293 AUD
$13,521 USD
As of November 1, 2026
Save $13,483 AUD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $32,777 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545041696. Listed at 14 retailers as of November 1, 2026, with prices from $19,293 to $32,777, a $13,483 spread on the same certified stone. MOH London lists it at $32,777. 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle42.1°
OriginNatural
Grading LabGIA
CertificateGIA 1545041696
Dimensions12.16 × 5.93 × 3.78 mm
L/W Ratio2.05
Girdle conditionFaceted
Top View
12.16 mm5.93 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545041696
Side View
Table 59.0%CrownGirdle: STK-THKPavilion 42.1°Culet: NoneDepth 63.7%

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: Nov 1
Current: $32,777 AUD|Low: $17,490 AUD|High: $33,172 AUD|Avg: $24,575 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7$20,112 AUD
Retailer 8$20,583 AUD
Retailer 3$20,987 AUD
Retailer 6$22,049 AUD
Retailer 4$22,103 AUD
Retailer 9$22,385 AUD
Retailer 10$22,736 AUD
Retailer 2$25,457 AUD
Retailer 11$29,731 AUD
Retailer 5$30,833 AUD
MOH London$32,777 AUD

45 data points across 11 retailers

14 retailers$19,293 AUD to $32,777 AUD

B+
Cheapest Retailer
-
$19,293 AUD
$13,521 USD
B+
Retailer 2
-
$20,112 AUD
$14,095 USD
View
Final sale: no returns
B+
Retailer 3
-
$20,583 AUD
$14,425 USD
View
B+
Retailer 4
-
$20,987 AUD
$14,708 USD
View
B+
Retailer 5
-
$21,161 AUD
$14,830 USD
View
Retailer 6
-
$22,049 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$22,103 AUD
£12,197 GBP
View
B
Retailer 8
-
$22,385 AUD
$15,688 USD
View
B
Retailer 9
-
$22,736 AUD
$15,934 USD
View
B
Retailer 10
-
$23,609 AUD
$16,546 USD
View
B
Retailer 11
-
$25,457 AUD
€16,991 EUR
View
B
Retailer 12
-
$29,731 AUD
$20,836 USD
View
B
Retailer 13
-
$30,833 AUD
ZAR 349,082 ZAR
View
Most Expensive
B
MOH London
95D10177E · Nov 1
$32,777 AUD
£18,087 GBP
View
13 more retailers have this diamond
Prices start from $19,293 AUDSave up to $13,483 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.

B+
1.51ct Marquise
$19,293 AUD