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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 $11,531 USD
A$17,739 AUD
As of November 1, 2026
Save $8,308 USD (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $19,839 USD 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 $11,531 to $19,839, a $8,308 spread on the same certified stone. MOH London lists it at $19,839. 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
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: $19,839 USD|Low: $11,168 USD|High: $20,077 USD|Avg: $15,262 USD|-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$11,531 USD
Retailer 10$13,437 USD
Retailer 4$13,557 USD
Retailer 9$13,636 USD
Retailer 7$14,021 USD
Retailer 2$14,211 USD
Retailer 5$15,189 USD
Retailer 3$16,000 USD
Retailer 6$18,662 USD
MOH London$19,839 USD

32 data points across 10 retailers

16 retailers$11,531 USD to $19,839 USD

B+
Cheapest Retailer
-
$11,531 USD
A$17,739 AUD
B
Retailer 2
-
$12,853 USD
View
B
Retailer 3
-
$13,009 USD
View
B
Retailer 4
-
$13,437 USD
View
Final sale: no returns
B+
Retailer 5
-
$13,557 USD
£10,675 GBP
View
Retailer 6
-
$13,636 USD
A$20,979 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$13,765 USD
View
B
Retailer 8
-
$14,021 USD
View
Retailer 9
-
$14,021 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$14,211 USD
£11,190 GBP
View
B
Retailer 11
-
$14,911 USD
View
B
Retailer 12
-
$15,189 USD
View
Retailer 13
-
$15,774 USD
View
Price last confirmed 44 days ago
B
Retailer 14
-
$16,000 USD
€15,238 EUR
View
B
Retailer 15
-
$18,662 USD
ZAR 301,479 ZAR
View
Most Expensive
B
MOH London
C167A3398 · Nov 1
$19,839 USD
£15,621 GBP
View
15 more retailers have this diamond
Prices start from $11,531 USDSave up to $8,308 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.

B+
1.51ct Marquise
$11,531 USD