Radiant|Natural|GIA

1.70ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 2516212093

Certificate GIA 2516212093

Diamond specifications and retailer prices

From £3,537 GBP
As of November 1, 2026
Save £2,732 GBP (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,672 GBP at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant 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 2516212093. Listed at 10 retailers as of November 1, 2026, with a 77% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.89°
Pavilion angle30.69°
OriginNatural
Grading LabGIA
CertificateGIA 2516212093
Dimensions7.50 × 5.95 × 4.05 mm
L/W Ratio1.26
Top View
7.50 mm5.95 mm1.70 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516212093
Side View
Table 66.0%Crown 44.89°Girdle: Very ThickPavilion 30.69°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,709 GBP|Low: £3,512 GBP|High: £6,430 GBP|Avg: £4,396 GBP|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3£3,537 GBP
Retailer 1£3,709 GBP
Retailer 4£3,762 GBP
Retailer 5£4,022 GBP
Retailer 6£4,349 GBP
Retailer 2£6,269 GBP

41 data points across 6 retailers

10 retailers£3,537 GBP to £6,269 GBP

A
Cheapest Retailer
-
£3,537 GBP
A
Retailer 2
-
£3,709 GBP
View
A
Retailer 3
-
£3,762 GBP
$5,040 USD
View
Retailer 4
-
£3,989 GBP
$5,345 USD
View
Price last confirmed 40 days ago
Retailer 5
-
£3,989 GBP
$5,345 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£3,989 GBP
$5,345 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£4,022 GBP
A$8,290 AUD
View
Price last confirmed 23 days ago
B
Retailer 8
-
£6,269 GBP
View
Retailer 9
-
£6,672 GBP
$8,940 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
55a6967a-7564-4f2f-b4bf-b2838b6666c7 · Sep 29
£6,672 GBP
$8,940 USD
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from £3,537 GBPSave up to £2,732 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.

A
1.70ct Radiant
£3,537 GBP