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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 $23,680 NZD
£10,491 GBP
As of October 28, 2026
Save $2,186 NZD (8%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $36,843 NZD 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
Colour
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 28
Current: $23,680 NZD|Low: $14,396 NZD|High: $34,941 NZD|Avg: $24,082 NZD|+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$14,396 NZD
Retailer 5$17,770 NZD
Retailer 4$18,836 NZD
Retailer 2$20,014 NZD
Retailer 13$20,859 NZD
Retailer 10$21,249 NZD
Retailer 6$22,808 NZD
Retailer 1$23,680 NZD
Retailer 16$23,903 NZD
Retailer 11$24,082 NZD
Retailer 3$25,664 NZD
Retailer 18$25,664 NZD
Retailer 12$25,865 NZD
Retailer 17$26,517 NZD
Retailer 14$26,826 NZD
Retailer 9$28,983 NZD
Retailer 7$32,256 NZD
Retailer 15$34,941 NZD

15 data points across 18 retailers

10 retailers$23,680 NZD to $25,865 NZD

Retailer 1
-
$20,014 NZD
$11,261 USD
Price last confirmed 7 days ago
Retailer 2
-
$20,859 NZD
CA$16,300 CAD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$23,680 NZD
£10,491 GBP
View
Retailer 4
-
$23,903 NZD
$13,449 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$24,082 NZD
$13,550 USD
View
B
Retailer 6
-
$25,664 NZD
$14,440 USD
View
B
Retailer 7
-
$25,865 NZD
$14,553 USD
View
Retailer 8
-
$26,826 NZD
€14,375 EUR
View
Price last confirmed 7 days ago
Retailer 9
-
$34,941 NZD
£15,480 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
7e516e3a-1d12-4631-bed3-9b2956fe97bc · Oct 3
$36,843 NZD
$20,730 USD
View
Price last confirmed 30 days ago
9 more retailers have this diamond
Prices start from $23,680 NZDSave up to $2,186 NZD

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
$23,680 NZD