Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 2566718053

Certificate GIA 2566718053

Diamond specifications and retailer prices

From $1,549 USD
HK$12,100 HKD
As of October 31, 2026
Save $2,780 USD (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,329 USD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2566718053. Listed at 21 retailers as of October 30, 2026, with prices from $1,549 to $4,329, a $2,780 spread on the same certified stone. NZ Jewellers lists it at $4,329. 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
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566718053
Dimensions6.18 × 6.28 × 3.98 mm
L/W Ratio1.02
Top View
6.18 mm6.28 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566718053
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.8%

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 31
Current: $4,329 USD|Low: $1,536 USD|High: $4,329 USD|Avg: $2,276 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 12$1,549 USD
Retailer 2$1,553 USD
Retailer 11$1,888 USD
Retailer 7$1,910 USD
Retailer 10$1,970 USD
Retailer 16$1,998 USD
Retailer 15$2,052 USD
Retailer 6$2,071 USD
Retailer 5$2,074 USD
Retailer 9$2,158 USD
Retailer 8$2,166 USD
Retailer 17$2,266 USD
Retailer 3$2,375 USD
Retailer 13$2,389 USD
Retailer 14$2,674 USD
Retailer 4$3,001 USD
Retailer 18$3,632 USD
NZ Jewellers$4,329 USD

8 data points across 18 retailers

21 retailers$1,549 USD to $4,329 USD

A
Cheapest Retailer
-
$1,549 USD
HK$12,100 HKD
A
Retailer 2
-
$1,553 USD
₹147,887 INR
View
B+
Retailer 3
-
$1,785 USD
A$2,746 AUD
View
B+
Retailer 4
-
$1,835 USD
View
B+
Retailer 5
-
$1,860 USD
SGD 2,514 SGD
View
A
Retailer 6
-
$1,888 USD
View
B+
Retailer 7
-
$1,910 USD
View
Final sale: no returns
B+
Retailer 8
-
$1,970 USD
View
A
Retailer 9
-
$1,998 USD
£1,573 GBP
View
B+
Retailer 10
-
$2,052 USD
View
B+
Retailer 11
-
$2,071 USD
View
Retailer 12
-
$2,074 USD
€1,975 EUR
View
Price last confirmed 5 days ago
B+
Retailer 13
-
$2,158 USD
SGD 2,916 SGD
View
B+
Retailer 14
-
$2,166 USD
View
B+
Retailer 15
-
$2,266 USD
£1,785 GBP
View
B+
Retailer 16
-
$2,375 USD
£1,870 GBP
View
B+
Retailer 17
-
$2,389 USD
View
B+
Retailer 18
-
$2,674 USD
€2,547 EUR
View
B
Retailer 19
-
$3,001 USD
View
B
Retailer 20
-
$3,632 USD
£2,860 GBP
View
Most Expensive
B
NZ Jewellers
564a754c-feb7-4c16-8167-edf1f156e176 · Oct 30
$4,329 USD
View
20 more retailers have this diamond
Prices start from $1,549 USDSave up to $2,780 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
$1,549 USD