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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6555154141

Certificate GIA 6555154141

Diamond specifications and retailer prices

From $8,208 USD
As of November 1, 2026
Save $6,405 USD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,613 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 6555154141. Listed at 16 retailers as of October 30, 2026, with prices from $8,208 to $14,613, a $6,405 spread on the same certified stone. NZ Jewellers lists it at $14,613. 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
SymmetryExcellent
FluorescenceNone
Crown angle39.42°
Pavilion angle37.74°
OriginNatural
Grading LabGIA
CertificateGIA 6555154141
Dimensions12.68 × 5.80 × 3.40 mm
L/W Ratio2.19
Top View
12.68 mm5.80 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555154141
Side View
Table 60.0%Crown 39.42°Girdle: MED-VTKPavilion 37.74°Culet: NoneDepth 58.6%

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: $9,948 USD|Low: $9,507 USD|High: $13,858 USD|Avg: $10,948 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$9,507 USD
Retailer 6$9,624 USD
Retailer 7$9,644 USD
Retailer 1$9,948 USD
Retailer 2$11,043 USD
Retailer 5$12,880 USD
Retailer 4$13,693 USD

38 data points across 7 retailers

16 retailers$8,208 USD to $14,613 USD

B+
Cheapest Retailer
-
$8,208 USD
B+
Retailer 2
-
$8,705 USD
View
B+
Retailer 3
-
$8,768 USD
View
B+
Retailer 4
-
$8,841 USD
View
B
Retailer 5
-
$9,347 USD
View
B
Retailer 6
-
$9,498 USD
View
B+
Retailer 7
-
$9,507 USD
£7,486 GBP
View
Retailer 8
-
$9,624 USD
A$14,807 AUD
View
Price last confirmed 10 days ago
B
Retailer 9
-
$9,644 USD
View
B
Retailer 10
-
$9,948 USD
£7,833 GBP
View
B
Retailer 11
-
$10,959 USD
View
B
Retailer 12
-
$11,043 USD
€10,517 EUR
View
Retailer 13
-
$11,540 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$12,880 USD
ZAR 208,082 ZAR
View
B
Retailer 15
-
$13,693 USD
£10,782 GBP
View
Most Expensive
B
NZ Jewellers
10678399-9b5e-4a92-b356-16fd98a4ee16 · Oct 30
$14,613 USD
View
15 more retailers have this diamond
Prices start from $8,208 USDSave up to $6,405 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
$8,208 USD