CaratHunter
Plans
Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 3545894934

Certificate GIA 3545894934

Diamond specifications and retailer prices

From £3,444 GBP
As of November 5, 2026
Save £3,846 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £7,290 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 3545894934. Listed at 21 retailers as of November 5, 2026, with prices from £3,444 to £7,290, a £3,846 spread on the same certified stone. NZ Jewellers lists it at £7,290. 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

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.5°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 3545894934
Dimensions7.06 × 7.17 × 4.63 mm
L/W Ratio1.02
Top View
7.06 mm7.17 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 3545894934
Side View
Table 56.0%Crown 38.5°Girdle: MED-THKPavilion 40.2°Culet: NDepth 65.0%

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 5
Current: £4,459 GBP|Low: £3,341 GBP|High: £6,491 GBP|Avg: £4,291 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12£3,444 GBP
Retailer 10£3,485 GBP
Retailer 11£3,644 GBP
Retailer 3£3,706 GBP
Retailer 4£3,810 GBP
Retailer 8£4,182 GBP
Retailer 2£4,365 GBP
Retailer 1£4,459 GBP
Retailer 7£4,725 GBP
Retailer 6£4,739 GBP
Retailer 5£5,318 GBP
Retailer 9£6,404 GBP

36 data points across 12 retailers

21 retailers£3,444 GBP to £7,290 GBP

B+
Cheapest Retailer
-
£3,444 GBP
A
Retailer 2
-
£3,485 GBP
View
B+
Retailer 3
-
£3,644 GBP
View
Final sale: no returns
B+
Retailer 4
-
£3,706 GBP
View
B+
Retailer 5
-
£3,810 GBP
View
Retailer 6
-
£3,949 GBP
View
Price last confirmed 50 days ago
B+
Retailer 7
-
£3,949 GBP
View
Retailer 8
-
£3,949 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£3,949 GBP
View
B+
Retailer 10
-
£4,182 GBP
View
Retailer 11
-
£4,365 GBP
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£4,459 GBP
View
Retailer 13
-
£4,557 GBP
View
Price last confirmed 45 days ago
B+
Retailer 14
-
£4,557 GBP
View
B+
Retailer 15
-
£4,725 GBP
View
B
Retailer 16
-
£4,739 GBP
View
Retailer 17
-
£4,808 GBP
View
Price last confirmed 14 days ago
B
Retailer 18
-
£5,318 GBP
View
B
Retailer 19
-
£6,404 GBP
View
Retailer 20
-
£7,290 GBP
View
Price last confirmed 48 days ago
Most Expensive
C
NZ Jewellers
2e0273fb-c338-4381-9582-6e861e1a2774 · Nov 5
£7,290 GBP
$9,758 USD
View
20 more retailers have this diamond
Prices start from £3,444 GBPSave up to £3,846 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
1.51ct Round
£3,444 GBP