CaratHunter
Plans
Marquise|Natural|GIA

1.70ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5241036081

Certificate GIA 5241036081

Diamond specifications and retailer prices

From $8,162 USD
SGD 11,030 SGD
As of November 1, 2026
Save $4,668 USD (36%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,830 USD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241036081. Listed at 12 retailers as of November 1, 2026, with prices from $8,162 to $12,830, a $4,668 spread on the same certified stone. Helzberg Diamonds lists it at $12,830. 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

1.70
Carat
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.49°
Pavilion angle38.01°
OriginNatural
Grading LabGIA
CertificateGIA 5241036081
Dimensions12.67 × 5.92 × 3.66 mm
L/W Ratio2.14
Culet sizeNone
Top View
12.67 mm5.92 mm1.70 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241036081
Side View
Table 57.0%Crown 39.49°Girdle: MED-THKPavilion 38.01°Culet: NoneDepth 61.8%

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: $12,830 USD|Low: $8,162 USD|High: $13,562 USD|Avg: $10,357 USD|-5.4%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$8,162 USD
Retailer 7$8,751 USD
Retailer 10$8,837 USD
Retailer 8$8,983 USD
Retailer 11$9,024 USD
Retailer 5$9,042 USD
Retailer 3$10,459 USD
Retailer 12$10,560 USD
Retailer 4$10,705 USD
Retailer 2$10,816 USD
Retailer 6$12,034 USD
Helzberg Diamonds$12,830 USD

30 data points across 12 retailers

12 retailers$8,162 USD to $12,830 USD

B+
Cheapest Retailer
-
$8,162 USD
SGD 11,030 SGD
B+
Retailer 2
-
$8,751 USD
View
B+
Retailer 3
-
$8,837 USD
SGD 11,942 SGD
View
B+
Retailer 4
-
$8,983 USD
View
B+
Retailer 5
-
$9,024 USD
View
B+
Retailer 6
-
$9,042 USD
£7,120 GBP
View
B
Retailer 7
-
$10,459 USD
View
B
Retailer 8
-
$10,560 USD
View
B+
Retailer 9
-
$10,705 USD
View
B+
Retailer 10
-
$10,816 USD
€10,301 EUR
View
B
Retailer 11
-
$12,034 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKHGJMGOH · Nov 1
$12,830 USD
View
11 more retailers have this diamond
Prices start from $8,162 USDSave up to $4,668 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+
1.70ct Marquise
$8,162 USD