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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7546359548

Certificate GIA 7546359548

Diamond specifications and retailer prices

From $20,459 NZD
A$17,739 AUD
As of November 1, 2026
Save $14,741 NZD (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $35,200 NZD 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 7546359548. Listed at 16 retailers as of November 1, 2026, with prices from $20,459 to $35,200, a $14,741 spread on the same certified stone. MOH London lists it at $35,200. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.98°
Pavilion angle40.36°
OriginNatural
Grading LabGIA
CertificateGIA 7546359548
Dimensions11.45 × 6.22 × 3.71 mm
L/W Ratio1.84
Girdle conditionVery Thick
Key to symbols
Feather, Cloud, Pinpoint
Top View
11.45 mm6.22 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7546359548
Side View
Table 64.0%Crown 32.98°GirdlePavilion 40.36°Culet: NDepth 59.6%

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: $35,200 NZD|Low: $19,815 NZD|High: $35,623 NZD|Avg: $27,079 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$20,459 NZD
Retailer 10$23,841 NZD
Retailer 4$24,055 NZD
Retailer 9$24,195 NZD
Retailer 7$24,877 NZD
Retailer 2$25,215 NZD
Retailer 5$26,950 NZD
Retailer 3$28,389 NZD
Retailer 6$33,111 NZD
MOH London$35,200 NZD

32 data points across 10 retailers

16 retailers$20,459 NZD to $35,200 NZD

B+
Cheapest Retailer
-
$20,459 NZD
A$17,739 AUD
B
Retailer 2
-
$22,805 NZD
$12,853 USD
View
B
Retailer 3
-
$23,082 NZD
$13,009 USD
View
B
Retailer 4
-
$23,841 NZD
$13,437 USD
View
Final sale: no returns
B+
Retailer 5
-
$24,055 NZD
£10,675 GBP
View
Retailer 6
-
$24,195 NZD
A$20,979 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$24,423 NZD
$13,765 USD
View
B
Retailer 8
-
$24,877 NZD
$14,021 USD
View
Retailer 9
-
$24,877 NZD
$14,021 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$25,215 NZD
£11,190 GBP
View
B
Retailer 11
-
$26,457 NZD
$14,911 USD
View
B
Retailer 12
-
$26,950 NZD
$15,189 USD
View
Retailer 13
-
$27,988 NZD
$15,774 USD
View
Price last confirmed 44 days ago
B
Retailer 14
-
$28,389 NZD
€15,238 EUR
View
B
Retailer 15
-
$33,111 NZD
ZAR 301,479 ZAR
View
Most Expensive
B
MOH London
C167A3398 · Nov 1
$35,200 NZD
£15,621 GBP
View
15 more retailers have this diamond
Prices start from $20,459 NZDSave up to $14,741 NZD

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
$20,459 NZD