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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7553357466

Certificate GIA 7553357466

Diamond specifications and retailer prices

From $10,170 USD
As of November 1, 2026
Save $8,111 USD (44%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $18,281 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 7553357466. Listed at 26 retailers as of October 30, 2026, with prices from $10,170 to $18,281, a $8,111 spread on the same certified stone. NZ Jewellers lists it at $18,281. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553357466
Dimensions11.87 × 6.01 × 3.45 mm
L/W Ratio1.98
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
11.87 mm6.01 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553357466
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.4%

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: Nov 1
Current: $18,281 USD|Low: $10,170 USD|High: $18,281 USD|Avg: $12,793 USD
NZ Jewellers
Retailer 2
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Retailer 19
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Retailer 25
November 2, 2026
Retailer 6$10,170 USD
Retailer 11$10,177 USD
Retailer 22$10,304 USD
Retailer 7$10,469 USD
Retailer 2$10,495 USD
Retailer 24$10,825 USD
Retailer 12$10,968 USD
Retailer 3$10,969 USD
Retailer 9$11,703 USD
Retailer 19$11,859 USD
Retailer 5$11,883 USD
Retailer 23$11,923 USD
Retailer 25$12,066 USD
Retailer 16$12,115 USD
Retailer 17$12,357 USD
Retailer 4$12,790 USD
Retailer 15$12,790 USD
Retailer 14$13,061 USD
Retailer 13$13,206 USD
Retailer 8$13,220 USD
Retailer 18$13,373 USD
Retailer 10$13,711 USD
Retailer 21$16,114 USD
Retailer 20$17,131 USD
NZ Jewellers$18,281 USD

36 data points across 25 retailers

26 retailers$10,170 USD to $18,281 USD

A
Cheapest Retailer
-
$10,170 USD
A
Retailer 2
-
$10,177 USD
View
A
Retailer 3
-
$10,304 USD
A$15,852 AUD
View
B+
Retailer 4
-
$10,469 USD
View
A
Retailer 5
-
$10,495 USD
View
B+
Retailer 6
-
$10,825 USD
View
B+
Retailer 7
-
$10,968 USD
View
Final sale: no returns
B+
Retailer 8
-
$10,969 USD
View
B+
Retailer 9
-
$11,703 USD
View
B+
Retailer 10
-
$11,859 USD
£9,337 GBP
View
B+
Retailer 11
-
$11,883 USD
View
Retailer 12
-
$11,923 USD
A$18,343 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$12,066 USD
View
B+
Retailer 14
-
$12,115 USD
View
Retailer 15
-
$12,357 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$12,790 USD
View
B
Retailer 17
-
$12,790 USD
View
B
Retailer 18
-
$13,061 USD
View
B+
Retailer 19
-
$13,206 USD
€12,577 EUR
View
B
Retailer 20
-
$13,220 USD
View
B+
Retailer 21
-
$13,373 USD
View
B+
Retailer 22
-
$13,711 USD
View
Retailer 23
-
$13,993 USD
View
Price last confirmed 52 days ago
B
Retailer 24
-
$16,114 USD
ZAR 260,329 ZAR
View
B
Retailer 25
-
$17,131 USD
£13,489 GBP
View
Most Expensive
B
NZ Jewellers
90d1e83d-884f-47a5-b97e-aee151af1695 · Oct 30
$18,281 USD
View
25 more retailers have this diamond
Prices start from $10,170 USDSave up to $8,111 USD

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
1.51ct Marquise
$10,170 USD