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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2557437761

Certificate GIA 2557437761

Diamond specifications and retailer prices

From £7,681 GBP
HK$80,400 HKD
As of October 27, 2026
Save £3,161 GBP (29%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £10,841 GBP at Reve Diamonds · As of October 29, 2026
View at Reve Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557437761. Listed at 14 retailers as of October 27, 2026, with prices from £7,681 to £10,841, a £3,161 spread on the same certified stone. Reve Diamonds lists it at £10,841. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557437761
Dimensions12.73 × 5.86 × 3.53 mm
L/W Ratio2.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural
Top View
12.73 mm5.86 mm1.70 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557437761
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.2%

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 27
Current: £13,838 GBP|Low: £7,681 GBP|High: £14,747 GBP|Avg: £10,602 GBP|-0.9%
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 25, 2026
Retailer 10£7,681 GBP
Retailer 9£8,914 GBP
Retailer 4£8,953 GBP
Retailer 5£9,062 GBP
Retailer 6£9,360 GBP
Retailer 7£9,602 GBP
Retailer 16£9,629 GBP
Retailer 11£9,696 GBP
Retailer 15£9,766 GBP
Retailer 14£9,980 GBP
Retailer 18£10,418 GBP
Retailer 3£10,581 GBP
Retailer 8£10,875 GBP
Retailer 17£10,987 GBP
Retailer 12£11,100 GBP
Retailer 2£12,747 GBP
Retailer 1£13,838 GBP
Retailer 13£14,747 GBP

32 data points across 18 retailers

14 retailers£7,681 GBP to £10,841 GBP

B+
Cheapest Retailer
-
£7,681 GBP
HK$80,400 HKD
Retailer 2
-
£8,654 GBP
SGD 15,669 SGD
View
Price last confirmed 21 days ago
Retailer 3
-
£8,914 GBP
$11,944 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£8,953 GBP
$11,996 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£9,062 GBP
$12,142 USD
View
Price last confirmed 10 days ago
Retailer 6
-
£9,602 GBP
$12,865 USD
View
Price last confirmed 7 days ago
Retailer 7
-
£9,629 GBP
A$19,848 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
£9,696 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£9,766 GBP
$13,086 USD
View
Price last confirmed 8 days ago
Retailer 10
-
£9,980 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
£10,418 GBP
$13,959 USD
View
Price last confirmed 10 days ago
Retailer 12
-
£10,445 GBP
$13,995 USD
View
Price last confirmed 7 days ago
Retailer 13
-
£10,581 GBP
$14,177 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Reve Diamonds
49609C2F6 · Oct 25
£10,841 GBP
$14,526 USD
View
13 more retailers have this diamond
Prices start from £7,681 GBPSave up to £3,161 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
£7,681 GBP