CaratHunter
Plans
Round|Lab Grown|IGI

1.00ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451057017

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057017

Diamond specifications and retailer prices

From $1,029 NZD
$580 USD
As of October 30, 2026
Save $6,382 NZD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,411 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057017 or 451057017. Listed at 12 retailers as of October 29, 2026, with prices from $1,029 to $7,411, a $6,382 spread on the same certified stone. MOH London lists it at $7,411. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057017
Dimensions6.38 × 6.41 × 3.94 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
6.38 mm6.41 mm1.00 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057017
Side View
Table 54.0%Crown 32.8°Girdle: UNDPavilion 40.3°Culet: NoneDepth 61.5%

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: $7,411 NZD|Low: $1,029 NZD|High: $7,472 NZD|Avg: $3,484 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 2$1,029 NZD
Retailer 7$1,978 NZD
Retailer 11$2,152 NZD
Retailer 10$2,213 NZD
Retailer 8$2,294 NZD
Retailer 13$2,599 NZD
Retailer 3$3,247 NZD
Retailer 12$3,323 NZD
Retailer 9$3,650 NZD
Retailer 6$3,933 NZD
Retailer 4$4,654 NZD
Retailer 5$6,571 NZD
MOH London$7,411 NZD

19 data points across 13 retailers

12 retailers$1,029 NZD to $7,411 NZD

A
Cheapest Retailer
-
$1,029 NZD
$580 USD
B+
Retailer 2
-
$1,978 NZD
$1,115 USD
View
B+
Retailer 3
-
$2,152 NZD
$1,213 USD
View
B+
Retailer 4
-
$2,213 NZD
$1,247 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,294 NZD
$1,293 USD
View
Retailer 6
-
$2,294 NZD
$1,293 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$2,599 NZD
$1,465 USD
View
B
Retailer 8
-
$3,650 NZD
$2,057 USD
View
B
Retailer 9
-
$3,933 NZD
€2,111 EUR
View
B
Retailer 10
-
$4,301 NZD
$2,424 USD
View
B
Retailer 11
-
$4,654 NZD
$2,623 USD
View
Most Expensive
B
MOH London
LG451057017 · Oct 29
$7,411 NZD
£3,289 GBP
View
11 more retailers have this diamond
Prices start from $1,029 NZDSave up to $6,382 NZD

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
$1,029 NZD