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Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 5241023174

Certificate GIA 5241023174

Diamond specifications and retailer prices

From $15,730 CAD
$11,261 USD
As of October 26, 2026
Save $5,354 CAD (25%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $28,958 CAD 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 26, 2026, with a 34% 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

1.70
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $18,611 CAD|Low: $11,315 CAD|High: $27,462 CAD|Avg: $18,928 CAD|+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$11,315 CAD
Retailer 5$13,966 CAD
Retailer 4$14,804 CAD
Retailer 2$15,730 CAD
Retailer 13$16,394 CAD
Retailer 10$16,701 CAD
Retailer 6$17,926 CAD
Retailer 1$18,611 CAD
Retailer 16$18,787 CAD
Retailer 11$18,928 CAD
Retailer 3$20,171 CAD
Retailer 18$20,171 CAD
Retailer 12$20,329 CAD
Retailer 17$20,842 CAD
Retailer 14$21,084 CAD
Retailer 9$22,780 CAD
Retailer 7$25,352 CAD
Retailer 15$27,462 CAD

15 data points across 18 retailers

10 retailers$15,730 CAD to $21,084 CAD

B+
Cheapest Retailer
-
$15,730 CAD
$11,261 USD
B+
Retailer 2
-
$16,394 CAD
View
B+
Retailer 3
-
$18,611 CAD
£10,491 GBP
View
Retailer 4
-
$18,787 CAD
$13,449 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$18,928 CAD
$13,550 USD
View
B
Retailer 6
-
$20,171 CAD
$14,440 USD
View
B
Retailer 7
-
$20,329 CAD
$14,553 USD
View
B
Retailer 8
-
$21,084 CAD
€14,375 EUR
View
Retailer 9
-
$27,462 CAD
£15,480 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
7e516e3a-1d12-4631-bed3-9b2956fe97bc · Oct 3
$28,958 CAD
$20,730 USD
View
Price last confirmed 29 days ago
9 more retailers have this diamond
Prices start from $15,730 CADSave up to $5,354 CAD

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
$15,730 CAD