Round|Lab Grown|IGI

9.58ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG778660622

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778660622

Diamond specifications and retailer prices

From $1,664 USD

HK$13,000 HKD

As of November 1, 2026

Save $5,086 USD (75%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $6,750 USD at Brilliant Earth · As of November 2, 2026

View at Brilliant Earth

About this 9.58ct lab-grown round diamond

This 9.58ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778660622 or 778660622. Listed at 18 retailers as of November 1, 2026, with prices from $1,664 to $6,750, a $5,086 spread on the same certified stone. Brilliant Earth lists it at $6,750. 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

9.58

Carat

Color

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.1°

Pavilion angle41.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG778660622

Dimensions13.62 × 13.68 × 8.33 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG778660622

Side View

Caratlytics Score

How it works →

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: $6,750 USD|Low: $1,221 USD|High: $6,750 USD|Avg: $2,998 USD

Brilliant Earth

Retailer 2

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Retailer 4

Retailer 5

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Retailer 11

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Retailer 19

November 2, 2026

Retailer 10$1,257 USD

Retailer 7$1,368 USD

Retailer 11$1,407 USD

Retailer 4$1,458 USD

Retailer 15$1,664 USD

Retailer 18$1,740 USD

Retailer 8$1,953 USD

Retailer 19$2,034 USD

Retailer 17$2,185 USD

Retailer 12$2,202 USD

Retailer 9$2,311 USD

Retailer 2$2,536 USD

Retailer 14$2,716 USD

Retailer 6$2,733 USD

Retailer 3$4,691 USD

Retailer 13$4,771 USD

Retailer 16$4,827 USD

Retailer 5$5,415 USD

Brilliant Earth$6,750 USD

28 data points across 19 retailers

18 retailers$1,664 USD to $6,750 USD

Retailer 1

$1,257 USD

Price last confirmed 7 days ago

Retailer 2

$1,368 USD

View

Price last confirmed 9 days ago

Retailer 3

$1,458 USD

View

Price last confirmed 8 days ago

Retailer 4

$1,664 USD

HK$13,000 HKD

View

Retailer 5

$1,740 USD

£1,370 GBP

View

Price last confirmed 7 days ago

Retailer 6

$1,953 USD

View

Price last confirmed 7 days ago

Retailer 7

$2,034 USD

£1,602 GBP

View

Price last confirmed 7 days ago

Retailer 8

$2,185 USD

View

Price last confirmed 6 days ago

B+

Retailer 9

$2,202 USD

€2,097 EUR

View

Retailer 10

$2,311 USD

View

Price last confirmed 7 days ago

B+

Retailer 11

$2,536 USD

View

B+

Retailer 12

$2,716 USD

A$4,178 AUD

View

Retailer 13

$2,733 USD

View

Price last confirmed 9 days ago

Retailer 14

$4,691 USD

£3,694 GBP

View

Price last confirmed 7 days ago

Retailer 15

$4,771 USD

View

Retailer 16

$4,827 USD

SGD 6,523 SGD

View

Retailer 17

$5,415 USD

View

Price last confirmed 9 days ago

Most Expensive

Brilliant Earth

18294262A · Nov 2

$6,750 USD

View

17 more retailers have this diamond

Prices start from $1,664 USDSave up to $5,086 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.

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9.58ct Round

$1,664 USD