Marquise|Natural|GIA

1.20ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 2566588407

Certificate GIA 2566588407

Diamond specifications and retailer prices

From $5,030 USD
As of November 1, 2026
Save $3,692 USD (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,976 USD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566588407. Listed at 15 retailers as of November 1, 2026, with a 73% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.73°
Pavilion angle39.25°
OriginNatural
Grading LabGIA
CertificateGIA 2566588407
Dimensions10.89 × 5.44 × 3.36 mm
L/W Ratio2.00
Culet sizeNone
Top View
10.89 mm5.44 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566588407
Side View
Table 57.0%Crown 39.73°Girdle: MED-THKPavilion 39.25°Culet: NDepth 61.7%

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: $7,013 USD|Low: $5,030 USD|High: $8,976 USD|Avg: $6,396 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Wholesale Diamonds Direct
November 3, 2026
Retailer 9$5,030 USD
Retailer 13$5,085 USD
Retailer 4$5,235 USD
Retailer 2$5,335 USD
Retailer 12$5,355 USD
Retailer 8$5,517 USD
Retailer 6$5,708 USD
Retailer 5$6,283 USD
Retailer 11$6,302 USD
Retailer 7$6,302 USD
Retailer 1$7,013 USD
Retailer 10$8,526 USD
Retailer 3$8,722 USD
Wholesale Diamonds Direct$8,976 USD

19 data points across 14 retailers

15 retailers$5,030 USD to $8,722 USD

B+
Cheapest Retailer
-
$5,030 USD
B+
Retailer 2
-
$5,085 USD
View
B+
Retailer 3
-
$5,150 USD
SGD 6,959 SGD
View
B+
Retailer 4
-
$5,235 USD
View
B+
Retailer 5
-
$5,335 USD
View
B+
Retailer 6
-
$5,355 USD
View
B
Retailer 7
-
$5,517 USD
SGD 7,456 SGD
View
B
Retailer 8
-
$5,708 USD
£4,494 GBP
View
B
Retailer 9
-
$6,283 USD
View
B
Retailer 10
-
$6,302 USD
View
B
Retailer 11
-
$6,302 USD
€6,002 EUR
View
B
Retailer 12
-
$7,013 USD
View
B
Retailer 13
-
$8,526 USD
View
B
Retailer 14
-
$8,722 USD
View
Most Expensive
Wholesale Diamonds Direct
611334230 · Oct 27
$8,976 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from $5,030 USDSave up to $3,692 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+
1.20ct Marquise
$5,030 USD