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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 6545876663

Certificate GIA 6545876663

Diamond specifications and retailer prices

From €9,446 EUR
$10,595 USD
As of November 1, 2026
Save €5,511 EUR (37%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €14,958 EUR at Cape Diamonds · As of October 31, 2026
View at Cape Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545876663. Listed at 11 retailers as of October 31, 2026, with prices from €9,446 to €14,958, a €5,511 spread on the same certified stone. Cape Diamonds lists it at €14,958. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.2°
Pavilion angle39.2°
OriginNatural
Grading LabGIA
CertificateGIA 6545876663
Dimensions11.47 × 6.07 × 3.73 mm
L/W Ratio1.89
Top View
11.47 mm6.07 mm1.51 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545876663
Side View
Table 60.0%Crown 38.2°Girdle: THK-VTKPavilion 39.2°Culet: NoneDepth 61.4%

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 1
Current: €14,958 EUR|Low: €9,446 EUR|High: €14,958 EUR|Avg: €11,623 EUR|+3.1%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10€9,446 EUR
Retailer 7€10,039 EUR
Retailer 4€11,012 EUR
Retailer 5€11,257 EUR
Retailer 8€11,263 EUR
Retailer 9€11,840 EUR
Retailer 11€11,840 EUR
Retailer 2€11,994 EUR
Retailer 6€12,145 EUR
Retailer 3€12,232 EUR
Cape Diamonds€14,958 EUR

43 data points across 11 retailers

11 retailers€9,446 EUR to €14,958 EUR

B+
Cheapest Retailer
-
€9,446 EUR
$10,595 USD
B
Retailer 2
-
€10,039 EUR
$11,260 USD
View
B+
Retailer 3
-
€11,012 EUR
£9,725 GBP
View
B
Retailer 4
-
€11,257 EUR
$12,626 USD
View
B
Retailer 5
-
€11,263 EUR
$12,633 USD
View
B
Retailer 6
-
€11,840 EUR
$13,280 USD
View
B
Retailer 7
-
€11,840 EUR
$13,280 USD
View
B
Retailer 8
-
€11,994 EUR
View
B
Retailer 9
-
€12,145 EUR
$13,622 USD
View
B
Retailer 10
-
€12,232 EUR
$13,720 USD
View
Most Expensive
B
Cape Diamonds
cert_6545876663 · Oct 31
€14,958 EUR
ZAR 271,026 ZAR
View
10 more retailers have this diamond
Prices start from €9,446 EURSave up to €5,511 EUR

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
€9,446 EUR