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Marquise|Natural|GIA

1.70ct K SI2 Marquise Natural Diamond

K/SI2

Diamond specifications and retailer prices

From £5,724 GBP
As of November 6, 2026
Save £4,286 GBP (43%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £10,010 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included) and certified by GIA. Listed at 3 retailers as of November 5, 2026, with prices from £5,724 to £10,010, a £4,286 spread on the same certified stone. NZ Jewellers lists it at £10,010. 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
K
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions12.00 × 6.22 × 3.95 mm
L/W Ratio1.93
Top View
12.00 mm6.22 mm1.70 ctK / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 63.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £10,010 GBP|Low: £5,329 GBP|High: £10,010 GBP|Avg: £6,936 GBP
NZ Jewellers
Retailer 2
Retailer 3
November 3, 2026
Retailer 3£5,724 GBP
Retailer 2£6,035 GBP
NZ Jewellers£10,010 GBP

4 data points across 3 retailers

3 retailers£5,724 GBP to £10,010 GBP

B
Cheapest Retailer
-
£5,724 GBP
C
Retailer 2
-
£6,035 GBP
View
Most Expensive
C
NZ Jewellers
365a3105-3c30-41e5-a945-6f2ec40a0c05 · Nov 5
£10,010 GBP
$13,398 USD
View
2 more retailers have this diamond
Prices start from £5,724 GBPSave up to £4,286 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
£5,724 GBP