Round|Natural|GIA

1.00ct D I1 Round Natural Diamond

VG • D/I1 • GIA 1425528761

Certificate GIA 1425528761

Diamond specifications and retailer prices

From $1,254 USD
HK$9,800 HKD
As of October 30, 2026
Save $1,076 USD (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,163 USD 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 October 30, 2026, with a 86% 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
Color
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: Oct 30
Current: $4,163 USD|Low: $1,254 USD|High: $4,163 USD|Avg: $1,999 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6$1,254 USD
Retailer 2$1,492 USD
Retailer 4$1,555 USD
Retailer 8$1,707 USD
Retailer 9$1,707 USD
Retailer 5$1,785 USD
Retailer 7$1,969 USD
Retailer 3$2,330 USD
NZ Jewellers$4,163 USD

43 data points across 9 retailers

9 retailers$1,254 USD to $2,330 USD

A
Cheapest Retailer
-
$1,254 USD
HK$9,800 HKD
A
Retailer 2
-
$1,492 USD
₹142,112 INR
View
B+
Retailer 3
-
$1,555 USD
View
B+
Retailer 4
-
$1,707 USD
View
B+
Retailer 5
-
$1,707 USD
View
B+
Retailer 6
-
$1,785 USD
View
Retailer 7
-
$1,969 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,330 USD
€2,219 EUR
View
Most Expensive
NZ Jewellers
7c4300af-bf5d-48ad-bef3-765b9c830372 · Oct 23
$4,163 USD
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from $1,254 USDSave up to $1,076 USD

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
$1,254 USD