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Round|Natural|GIA

1.00ct D I1 Round Natural Diamond

VG • D/I1 • GIA 1425528761

Certificate GIA 1425528761

Diamond specifications and retailer prices

From $1,620 SGD
HK$9,900 HKD
As of November 1, 2026
Save $1,347 SGD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,322 SGD at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and I1 clarity (included), with a very-good cut grade and certified by GIA 1425528761. Listed at 9 retailers as of November 1, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1425528761
Dimensions6.21 × 6.25 × 4.01 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Cavity, Natural, Needle
Top View
6.21 mm6.25 mm1.00 ctD / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1425528761
Side View
Table 58.0%Crown 37°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 64.4%

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: $5,322 SGD|Low: $1,604 SGD|High: $5,322 SGD|Avg: $2,556 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$1,620 SGD
Retailer 2$1,901 SGD
Retailer 5$1,988 SGD
Retailer 8$2,182 SGD
Retailer 9$2,182 SGD
Retailer 6$2,282 SGD
Retailer 7$2,517 SGD
Retailer 3$2,967 SGD
NZ Jewellers$5,322 SGD

44 data points across 9 retailers

9 retailers$1,620 SGD to $2,967 SGD

A
Cheapest Retailer
-
$1,620 SGD
HK$9,900 HKD
A
Retailer 2
-
$1,901 SGD
₹141,588 INR
View
B+
Retailer 3
-
$1,988 SGD
$1,555 USD
View
Retailer 4
-
$2,182 SGD
$1,707 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$2,182 SGD
$1,707 USD
View
Retailer 6
-
$2,282 SGD
$1,785 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$2,517 SGD
$1,969 USD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$2,967 SGD
€2,210 EUR
View
Most Expensive
NZ Jewellers
7c4300af-bf5d-48ad-bef3-765b9c830372 · Oct 23
$5,322 SGD
$4,163 USD
View
Price last confirmed 9 days ago
8 more retailers have this diamond
Prices start from $1,620 SGDSave up to $1,347 SGD

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
$1,620 SGD