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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 1558829621

Certificate GIA 1558829621

Diamond specifications and retailer prices

From $9,081 USD
As of November 6, 2026
Save $6,597 USD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $15,678 USD at MOH London · As of November 4, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558829621. Listed at 13 retailers as of November 4, 2026, with prices from $9,081 to $15,678, a $6,597 spread on the same certified stone. MOH London lists it at $15,678. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558829621
Dimensions11.17 × 5.88 × 3.79 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Pinpoint
Top View
11.17 mm5.88 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558829621
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.4%

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 6
Current: $15,678 USD|Low: $8,126 USD|High: $15,888 USD|Avg: $10,899 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 8$8,126 USD
Retailer 5$9,081 USD
Retailer 6$9,132 USD
Retailer 11$9,708 USD
Retailer 7$9,740 USD
Retailer 4$9,822 USD
Retailer 12$10,522 USD
Retailer 10$10,871 USD
Retailer 2$11,331 USD
Retailer 15$11,736 USD
Retailer 14$11,900 USD
Retailer 16$11,900 USD
Retailer 9$12,165 USD
Retailer 3$12,300 USD
Retailer 13$12,375 USD
MOH London$15,678 USD

9 data points across 16 retailers

13 retailers$9,081 USD to $15,678 USD

B+
Cheapest Retailer
-
$9,081 USD
B+
Retailer 2
-
$9,708 USD
View
B+
Retailer 3
-
$9,822 USD
View
B
Retailer 4
-
$10,522 USD
View
B+
Retailer 5
-
$10,871 USD
View
B
Retailer 6
-
$11,331 USD
View
B
Retailer 7
-
$11,736 USD
View
B
Retailer 8
-
$11,900 USD
View
B
Retailer 9
-
$11,900 USD
View
B
Retailer 10
-
$12,165 USD
View
B
Retailer 11
-
$12,300 USD
View
B
Retailer 12
-
$12,375 USD
View
Most Expensive
B
MOH London
941042344 · Nov 4
$15,678 USD
£12,345 GBP
View
12 more retailers have this diamond
Prices start from $9,081 USDSave up to $6,597 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
$9,081 USD