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Radiant|Natural|GIA

1.70ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6562473629

Certificate GIA 6562473629

Diamond specifications and retailer prices

From £5,164 GBP
As of November 6, 2026
Save £6,161 GBP (54%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £11,325 GBP at NZ Jewellers · As of November 5, 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 I 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 6562473629. Listed at 26 retailers as of November 5, 2026, with prices from £5,164 to £11,325, a £6,161 spread on the same certified stone. NZ Jewellers lists it at £11,325. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle53.51°
Pavilion angle59.19°
OriginNatural
Grading LabGIA
CertificateGIA 6562473629
Dimensions7.77 × 5.97 × 4.11 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.77 mm5.97 mm1.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6562473629
Side View
Table 67.0%Crown 53.51°Girdle: THK-VTKPavilion 59.19°Culet: NoneDepth 68.9%

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 6
Current: £6,253 GBP|Low: £5,241 GBP|High: £9,538 GBP|Avg: £6,817 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3£5,241 GBP
Retailer 10£5,540 GBP
Retailer 9£6,055 GBP
Retailer 1£6,253 GBP
Retailer 8£6,379 GBP
Retailer 4£6,390 GBP
Retailer 2£6,876 GBP
Retailer 5£7,358 GBP
Retailer 6£8,261 GBP
Retailer 7£9,411 GBP

27 data points across 10 retailers

26 retailers£5,164 GBP to £11,325 GBP

B+
Cheapest Retailer
-
£5,164 GBP
B+
Retailer 2
-
£5,241 GBP
View
B+
Retailer 3
-
£5,448 GBP
View
Retailer 4
-
£5,540 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£5,714 GBP
View
Price last confirmed 27 days ago
B+
Retailer 6
-
£5,730 GBP
View
B+
Retailer 7
-
£5,852 GBP
View
B+
Retailer 8
-
£6,055 GBP
View
B
Retailer 9
-
£6,096 GBP
View
B
Retailer 10
-
£6,216 GBP
View
B
Retailer 11
-
£6,250 GBP
View
Final sale: no returns
Retailer 12
-
£6,250 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£6,253 GBP
View
Retailer 14
-
£6,379 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£6,390 GBP
View
B
Retailer 16
-
£6,771 GBP
View
B
Retailer 17
-
£6,778 GBP
View
B
Retailer 18
-
£6,876 GBP
View
B
Retailer 19
-
£6,920 GBP
View
B
Retailer 20
-
£6,959 GBP
View
B
Retailer 21
-
£7,358 GBP
View
B
Retailer 22
-
£7,813 GBP
View
B
Retailer 23
-
£8,261 GBP
View
B
Retailer 24
-
£9,411 GBP
View
B
Retailer 25
-
£9,893 GBP
View
Most Expensive
B
NZ Jewellers
29e75ff6-477c-4d95-8fbb-3e2404f5e011 · Nov 5
£11,325 GBP
$15,159 USD
View
25 more retailers have this diamond
Prices start from £5,164 GBPSave up to £6,161 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 Radiant
£5,164 GBP