Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 5241023174

Certificate GIA 5241023174

Diamond specifications and retailer prices

From $13,323 USD
£10,491 GBP
As of October 28, 2026
Save $1,230 USD (8%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $20,730 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two 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 5241023174. Listed at 10 retailers as of October 27, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.91°
Pavilion angle38.78°
OriginNatural
Grading LabGIA
CertificateGIA 5241023174
Dimensions11.66 × 5.99 × 3.87 mm
L/W Ratio1.95
Culet sizeNone
Top View
11.66 mm5.99 mm1.70 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5241023174
Side View
Table 59.0%Crown 39.91°Girdle: STK-VTKPavilion 38.78°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $13,323 USD|Low: $8,100 USD|High: $19,660 USD|Avg: $13,550 USD|+20.7%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 28, 2026
Retailer 8$8,100 USD
Retailer 5$9,998 USD
Retailer 4$10,598 USD
Retailer 2$11,261 USD
Retailer 13$11,736 USD
Retailer 10$11,956 USD
Retailer 6$12,833 USD
Retailer 1$13,323 USD
Retailer 16$13,449 USD
Retailer 11$13,550 USD
Retailer 3$14,440 USD
Retailer 18$14,440 USD
Retailer 12$14,553 USD
Retailer 17$14,920 USD
Retailer 14$15,094 USD
Retailer 9$16,308 USD
Retailer 7$18,149 USD
Retailer 15$19,660 USD

15 data points across 18 retailers

10 retailers$13,323 USD to $14,553 USD

Retailer 1
-
$11,261 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
$11,736 USD
CA$16,300 CAD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$13,323 USD
£10,491 GBP
View
Retailer 4
-
$13,449 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$13,550 USD
View
B
Retailer 6
-
$14,440 USD
View
B
Retailer 7
-
$14,553 USD
View
B
Retailer 8
-
$15,094 USD
€14,375 EUR
View
Price last confirmed 7 days ago
Retailer 9
-
$19,660 USD
£15,480 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
7e516e3a-1d12-4631-bed3-9b2956fe97bc · Oct 3
$20,730 USD
View
Price last confirmed 30 days ago
9 more retailers have this diamond
Prices start from $13,323 USDSave up to $1,230 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
$13,323 USD