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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 1419788217

Certificate GIA 1419788217

Diamond specifications and retailer prices

From £1,271 GBP
As of November 5, 2026
Save £1,947 GBP (61%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,219 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1419788217. Listed at 20 retailers as of November 5, 2026, with prices from £1,271 to £3,219, a £1,947 spread on the same certified stone. NZ Jewellers lists it at £3,219. 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

1.00
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1419788217
Dimensions6.27 × 6.21 × 4.00 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.27 mm6.21 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1419788217
Side View
Table 58.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.1%

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: £1,445 GBP|Low: £1,073 GBP|High: £2,730 GBP|Avg: £1,554 GBP|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 8£1,271 GBP
Retailer 6£1,288 GBP
Retailer 4£1,289 GBP
Retailer 7£1,325 GBP
Retailer 10£1,350 GBP
Retailer 2£1,357 GBP
Retailer 9£1,395 GBP
Retailer 1£1,445 GBP
Retailer 5£2,095 GBP
Retailer 3£2,690 GBP

39 data points across 10 retailers

20 retailers£1,271 GBP to £3,219 GBP

A
Cheapest Retailer
-
£1,271 GBP
B+
Retailer 2
-
£1,288 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,289 GBP
View
A
Retailer 4
-
£1,325 GBP
View
B+
Retailer 5
-
£1,350 GBP
View
B+
Retailer 6
-
£1,357 GBP
View
Retailer 7
-
£1,395 GBP
View
Price last confirmed 39 days ago
Retailer 8
-
£1,395 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,444 GBP
View
A
Retailer 10
-
£1,445 GBP
View
Retailer 11
-
£1,459 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£1,538 GBP
View
B+
Retailer 13
-
£1,538 GBP
View
B+
Retailer 14
-
£1,590 GBP
View
B+
Retailer 15
-
£1,609 GBP
View
Retailer 16
-
£1,609 GBP
View
Price last confirmed 38 days ago
B
Retailer 17
-
£2,095 GBP
View
B
Retailer 18
-
£2,690 GBP
View
Retailer 19
-
£3,219 GBP
View
Price last confirmed 39 days ago
Most Expensive
C
NZ Jewellers
a65bffac-60f3-4889-8342-1e52cfa84889 · Nov 5
£3,219 GBP
$4,332 USD
View
19 more retailers have this diamond
Prices start from £1,271 GBPSave up to £1,947 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
1.00ct Round
£1,271 GBP