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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1565578236

Certificate GIA 1565578236

Diamond specifications and retailer prices

From £8,066 GBP
SGD 14,628 SGD
As of November 1, 2026
Save £6,389 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £14,455 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1565578236. Listed at 15 retailers as of November 1, 2026, with prices from £8,066 to £14,455, a £6,389 spread on the same certified stone. With Clarity lists it at £14,455. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.25°
Pavilion angle36.86°
OriginNatural
Grading LabGIA
CertificateGIA 1565578236
Dimensions12.08 × 6.00 × 3.70 mm
L/W Ratio2.01
Culet sizeNone
Top View
12.08 mm6.00 mm1.70 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565578236
Side View
Table 58.0%Crown 43.25°Girdle: MED-VTKPavilion 36.86°Culet: NoneDepth 61.7%

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: £10,304 GBP|Low: £8,066 GBP|High: £14,455 GBP|Avg: £9,891 GBP|+0.6%
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 2, 2026
Retailer 7£8,066 GBP
Retailer 9£8,462 GBP
Retailer 10£8,555 GBP
Retailer 8£8,680 GBP
Retailer 11£8,754 GBP
Retailer 3£8,823 GBP
Retailer 6£8,862 GBP
Retailer 5£8,916 GBP
Retailer 4£10,225 GBP
Retailer 12£10,304 GBP
Retailer 1£10,304 GBP
Retailer 2£10,568 GBP
Retailer 13£12,477 GBP
With Clarity£14,455 GBP

19 data points across 14 retailers

15 retailers£8,066 GBP to £14,455 GBP

B+
Cheapest Retailer
-
£8,066 GBP
SGD 14,628 SGD
B+
Retailer 2
-
£8,462 GBP
$11,356 USD
View
B
Retailer 3
-
£8,555 GBP
$11,480 USD
View
B+
Retailer 4
-
£8,680 GBP
$11,648 USD
View
B
Retailer 5
-
£8,731 GBP
SGD 15,833 SGD
View
B
Retailer 6
-
£8,754 GBP
$11,747 USD
View
B
Retailer 7
-
£8,823 GBP
$11,840 USD
View
B+
Retailer 8
-
£8,862 GBP
View
B
Retailer 9
-
£8,916 GBP
$11,965 USD
View
B
Retailer 10
-
£10,225 GBP
$13,721 USD
View
B
Retailer 11
-
£10,304 GBP
$13,827 USD
View
B
Retailer 12
-
£10,304 GBP
€13,169 EUR
View
B
Retailer 13
-
£10,568 GBP
$14,182 USD
View
B
Retailer 14
-
£12,477 GBP
$16,744 USD
View
Most Expensive
B
With Clarity
1565578236 · Nov 2
£14,455 GBP
$19,398 USD
View
14 more retailers have this diamond
Prices start from £8,066 GBPSave up to £6,389 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
£8,066 GBP