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Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

VG • F/SI1 • GIA 2568608905

Certificate GIA 2568608905

Diamond specifications and retailer prices

From £10,237 GBP
SGD 18,564 SGD
As of November 1, 2026
Save £8,111 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £18,348 GBP at With Clarity · As of November 2, 2026
View at With Clarity

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2568608905. Listed at 15 retailers as of November 1, 2026, with prices from £10,237 to £18,348, a £8,111 spread on the same certified stone. With Clarity lists it at £18,348. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.59°
Pavilion angle37.42°
OriginNatural
Grading LabGIA
CertificateGIA 2568608905
Dimensions12.98 × 6.17 × 3.49 mm
L/W Ratio2.10
Culet sizeNone
Top View
12.98 mm6.17 mm1.70 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2568608905
Side View
Table 62.0%Crown 37.59°Girdle: THN-VTKPavilion 37.42°Culet: NDepth 56.6%

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: Nov 1
Current: £10,796 GBP|Low: £10,237 GBP|High: £18,348 GBP|Avg: £12,763 GBP|-4.1%
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
With Clarity
November 3, 2026
Retailer 9£10,237 GBP
Retailer 12£10,736 GBP
Retailer 8£10,746 GBP
Retailer 1£10,796 GBP
Retailer 13£10,880 GBP
Retailer 5£11,007 GBP
Retailer 4£11,215 GBP
Retailer 3£12,664 GBP
Retailer 11£12,859 GBP
Retailer 6£13,079 GBP
Retailer 10£13,099 GBP
Retailer 7£15,092 GBP
Retailer 2£15,840 GBP
With Clarity£18,348 GBP

16 data points across 14 retailers

15 retailers£10,237 GBP to £18,348 GBP

B+
Cheapest Retailer
-
£10,237 GBP
SGD 18,564 SGD
B
Retailer 2
-
£10,736 GBP
$14,407 USD
View
B
Retailer 3
-
£10,746 GBP
$14,420 USD
View
B+
Retailer 4
-
£10,796 GBP
View
B
Retailer 5
-
£10,880 GBP
$14,601 USD
View
B
Retailer 6
-
£11,007 GBP
$14,771 USD
View
B
Retailer 7
-
£11,082 GBP
SGD 20,097 SGD
View
B
Retailer 8
-
£11,215 GBP
$15,050 USD
View
B
Retailer 9
-
£12,664 GBP
$16,995 USD
View
B
Retailer 10
-
£12,859 GBP
$17,256 USD
View
B
Retailer 11
-
£13,079 GBP
€16,715 EUR
View
Retailer 12
-
£13,099 GBP
$17,579 USD
View
Price last confirmed 7 days ago
B
Retailer 13
-
£15,092 GBP
$20,252 USD
View
B
Retailer 14
-
£15,840 GBP
$21,256 USD
View
Most Expensive
B
With Clarity
2568608905 · Nov 2
£18,348 GBP
$24,622 USD
View
14 more retailers have this diamond
Prices start from £10,237 GBPSave up to £8,111 GBP

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
£10,237 GBP