Marquise|Natural|GIA

1.02ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1242036004

Certificate GIA 1242036004

Diamond specifications and retailer prices

From $2,664 USD
As of October 31, 2026
Save $2,401 USD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,065 USD at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded I 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 1242036004. Listed at 14 retailers as of October 31, 2026, with prices from $2,664 to $5,065, a $2,401 spread on the same certified stone. Helzberg Diamonds lists it at $5,065. 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

1.02
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.06°
Pavilion angle40.17°
OriginNatural
Grading LabGIA
CertificateGIA 1242036004
Dimensions9.96 × 5.23 × 3.30 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.96 mm5.23 mm1.02 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242036004
Side View
Table 60.0%Crown 38.06°Girdle: MED-THKPavilion 40.17°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,065 USD|Low: $2,664 USD|High: $5,167 USD|Avg: $3,474 USD|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 5, 2026
Retailer 10$2,664 USD
Retailer 2$2,729 USD
Retailer 6$2,732 USD
Retailer 11$2,872 USD
Retailer 12$2,880 USD
Retailer 7$3,111 USD
Retailer 4$3,209 USD
Retailer 14$3,432 USD
Retailer 3$3,523 USD
Retailer 8$3,551 USD
Retailer 9$3,696 USD
Retailer 13$4,493 USD
Retailer 5$4,762 USD
Helzberg Diamonds$5,065 USD

35 data points across 14 retailers

14 retailers$2,664 USD to $5,065 USD

A
Cheapest Retailer
-
$2,664 USD
A
Retailer 2
-
$2,729 USD
View
A
Retailer 3
-
$2,732 USD
View
B+
Retailer 4
-
$2,872 USD
View
B+
Retailer 5
-
$2,880 USD
View
B+
Retailer 6
-
$3,111 USD
View
B+
Retailer 7
-
$3,209 USD
View
B+
Retailer 8
-
$3,432 USD
View
B+
Retailer 9
-
$3,523 USD
View
B+
Retailer 10
-
$3,551 USD
View
B+
Retailer 11
-
$3,696 USD
View
B
Retailer 12
-
$4,493 USD
View
B
Retailer 13
-
$4,762 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHIKIGJMGGK · Nov 3
$5,065 USD
View
13 more retailers have this diamond
Prices start from $2,664 USDSave up to $2,401 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.

A
1.02ct Marquise
$2,664 USD