Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

GD • G/SI1 • GIA 6561587509

Certificate GIA 6561587509

Diamond specifications and retailer prices

From $7,730 USD
As of November 4, 2026
Save $6,126 USD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $13,856 USD at With Clarity · As of November 6, 2026
View at With Clarity

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6561587509. Listed at 13 retailers as of November 4, 2026, with prices from $7,730 to $13,856, a $6,126 spread on the same certified stone. With Clarity lists it at $13,856. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.81°
Pavilion angle40.54°
OriginNatural
Grading LabGIA
CertificateGIA 6561587509
Dimensions10.64 × 5.84 × 3.94 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.64 mm5.84 mm1.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561587509
Side View
Table 61.0%Crown 43.81°Girdle: VTN-VTKPavilion 40.54°Culet: NoneDepth 67.5%

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 4
Current: $8,693 USD|Low: $7,730 USD|High: $13,856 USD|Avg: $9,419 USD|-18.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 6, 2026
Retailer 4$7,730 USD
Retailer 11$8,184 USD
Retailer 10$8,508 USD
Retailer 2$8,625 USD
Retailer 1$8,693 USD
Retailer 6$8,721 USD
Retailer 12$8,730 USD
Retailer 3$9,929 USD
Retailer 7$10,023 USD
Retailer 5$10,197 USD
Retailer 8$10,209 USD
Retailer 9$12,551 USD
With Clarity$13,856 USD

8 data points across 13 retailers

13 retailers$7,730 USD to $13,856 USD

B+
Cheapest Retailer
-
$7,730 USD
B+
Retailer 2
-
$8,184 USD
View
B+
Retailer 3
-
$8,508 USD
View
B+
Retailer 4
-
$8,625 USD
View
B+
Retailer 5
-
$8,693 USD
View
B+
Retailer 6
-
$8,721 USD
View
B+
Retailer 7
-
$8,730 USD
View
B
Retailer 8
-
$9,929 USD
View
B
Retailer 9
-
$10,023 USD
View
B
Retailer 10
-
$10,197 USD
View
B
Retailer 11
-
$10,209 USD
View
B
Retailer 12
-
$12,551 USD
View
Most Expensive
B
With Clarity
6561587509 · Nov 6
$13,856 USD
View
12 more retailers have this diamond
Prices start from $7,730 USDSave up to $6,126 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
$7,730 USD