Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 2235994080

Certificate GIA 2235994080

Diamond specifications and retailer prices

From $6,714 USD
£5,286 GBP
As of November 2, 2026
Save $6,320 USD (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $13,034 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 I 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 2235994080. Listed at 11 retailers as of October 30, 2026, with prices from $6,714 to $13,034, a $6,320 spread on the same certified stone. NZ Jewellers lists it at $13,034. 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
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.28°
Pavilion angle43.32°
OriginNatural
Grading LabGIA
CertificateGIA 2235994080
Dimensions10.60 × 5.95 × 4.04 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
10.60 mm5.95 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2235994080
Side View
Table 63.0%Crown 38.28°Girdle: THK-VTKPavilion 43.32°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,034 USD|Low: $6,145 USD|High: $13,604 USD|Avg: $8,646 USD|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 13$6,145 USD
Retailer 7$6,714 USD
Retailer 4$6,860 USD
Retailer 10$7,010 USD
Retailer 11$7,190 USD
Retailer 6$7,394 USD
Retailer 3$7,719 USD
Retailer 5$7,720 USD
Retailer 12$7,793 USD
Retailer 2$7,834 USD
Retailer 8$8,816 USD
Retailer 9$10,860 USD
NZ Jewellers$13,034 USD

17 data points across 13 retailers

11 retailers$6,714 USD to $13,034 USD

Retailer 1
-
$6,145 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$6,714 USD
£5,286 GBP
View
B+
Retailer 3
-
$7,010 USD
View
B+
Retailer 4
-
$7,190 USD
View
B+
Retailer 5
-
$7,394 USD
£5,822 GBP
View
Retailer 6
-
$7,719 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$7,793 USD
View
B+
Retailer 8
-
$7,834 USD
View
B
Retailer 9
-
$8,816 USD
View
B
Retailer 10
-
$10,860 USD
£8,551 GBP
View
Most Expensive
C
NZ Jewellers
ac89687c-962d-4a3e-b7d5-3dd3a6415160 · Oct 30
$13,034 USD
View
10 more retailers have this diamond
Prices start from $6,714 USDSave up to $6,320 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
$6,714 USD